X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=kernel%2Fpower%2Fdisk.c;h=81d4d982f3f097f55f02f427381f8871cac6f8cf;hb=638ebcc81f40b160f5e8b161e690e9b1b9503c1e;hp=76a5131b0e808813a61d3f77529953137972ab96;hpb=7088a5c00103ef48782d6c359cd12b13a10666e6;p=linux-2.6

diff --git a/kernel/power/disk.c b/kernel/power/disk.c
index 76a5131b0e..81d4d982f3 100644
--- a/kernel/power/disk.c
+++ b/kernel/power/disk.c
@@ -22,16 +22,6 @@
 #include "power.h"
 
 
-extern suspend_disk_method_t pm_disk_mode;
-
-extern int swsusp_suspend(void);
-extern int swsusp_write(struct pbe *pblist, unsigned int nr_pages);
-extern int swsusp_check(void);
-extern int swsusp_read(struct pbe **pblist_ptr);
-extern void swsusp_close(void);
-extern int swsusp_resume(void);
-
-
 static int noresume = 0;
 char resume_file[256] = CONFIG_PM_STD_PARTITION;
 dev_t swsusp_resume_device;
@@ -52,7 +42,7 @@ static void power_down(suspend_disk_method_t mode)
 
 	switch(mode) {
 	case PM_DISK_PLATFORM:
-		kernel_power_off_prepare();
+		kernel_shutdown_prepare(SYSTEM_SUSPEND_DISK);
 		error = pm_ops->enter(PM_SUSPEND_DISK);
 		break;
 	case PM_DISK_SHUTDOWN:
@@ -69,35 +59,6 @@ static void power_down(suspend_disk_method_t mode)
 	while(1);
 }
 
-
-static int in_suspend __nosavedata = 0;
-
-
-/**
- *	free_some_memory -  Try to free as much memory as possible
- *
- *	... but do not OOM-kill anyone
- *
- *	Notice: all userland should be stopped at this point, or
- *	livelock is possible.
- */
-
-static void free_some_memory(void)
-{
-	unsigned int i = 0;
-	unsigned int tmp;
-	unsigned long pages = 0;
-	char *p = "-\\|/";
-
-	printk("Freeing memory...  ");
-	while ((tmp = shrink_all_memory(10000))) {
-		pages += tmp;
-		printk("\b%c", p[i++ % 4]);
-	}
-	printk("\bdone (%li pages freed)\n", pages);
-}
-
-
 static inline void platform_finish(void)
 {
 	if (pm_disk_mode == PM_DISK_PLATFORM) {
@@ -111,7 +72,6 @@ static int prepare_processes(void)
 	int error;
 
 	pm_prepare_console();
-	sys_sync();
 	disable_nonboot_cpus();
 
 	if (freeze_processes()) {
@@ -119,16 +79,9 @@ static int prepare_processes(void)
 		goto thaw;
 	}
 
-	if (pm_disk_mode == PM_DISK_PLATFORM) {
-		if (pm_ops && pm_ops->prepare) {
-			if ((error = pm_ops->prepare(PM_SUSPEND_DISK)))
-				goto thaw;
-		}
-	}
-
 	/* Free memory before shutting down devices. */
-	free_some_memory();
-	return 0;
+	if (!(error = swsusp_shrink_memory()))
+		return 0;
 thaw:
 	thaw_processes();
 	enable_nonboot_cpus();
@@ -176,7 +129,7 @@ int pm_suspend_disk(void)
 	if (in_suspend) {
 		device_resume();
 		pr_debug("PM: writing image.\n");
-		error = swsusp_write(pagedir_nosave, nr_copy_pages);
+		error = swsusp_write();
 		if (!error)
 			power_down(pm_disk_mode);
 		else {
@@ -247,7 +200,7 @@ static int software_resume(void)
 
 	pr_debug("PM: Reading swsusp image.\n");
 
-	if ((error = swsusp_read(&pagedir_nosave))) {
+	if ((error = swsusp_read())) {
 		swsusp_free();
 		goto Thaw;
 	}
@@ -389,9 +342,29 @@ out:
 
 power_attr(resume);
 
+static ssize_t image_size_show(struct subsystem * subsys, char *buf)
+{
+	return sprintf(buf, "%lu\n", image_size);
+}
+
+static ssize_t image_size_store(struct subsystem * subsys, const char * buf, size_t n)
+{
+	unsigned long size;
+
+	if (sscanf(buf, "%lu", &size) == 1) {
+		image_size = size;
+		return n;
+	}
+
+	return -EINVAL;
+}
+
+power_attr(image_size);
+
 static struct attribute * g[] = {
 	&disk_attr.attr,
 	&resume_attr.attr,
+	&image_size_attr.attr,
 	NULL,
 };